Concise Bible Dictionary:

This is also called “ARK OF THE COVENANT,” “ARK OF THE TESTIMONY,” and “ARK OF JEHOVAH.” The sacred chest belonging to the Tabernacle and the Temple. It was made of shittim wood, overlaid within and without with pure gold. It was 2.5 cubits long, 1.5 cubits in breadth, and the same in height, with a crown or cornice of gold. On each side were rings of gold in which were inserted the staves by which it was carried. Its lid, on which were the two cherubim made wholly of gold, was called the MERCY-SEAT. The ark was typical of Christ, in that it figured the manifestation of divine righteousness (gold) in man; the mercy-seat was Jehovah’s throne, the place of His dwelling on earth. In the ark were placed the two tables of stone (the righteousness demanded by God from man), and afterward the golden pot that had manna, and Aaron’s rod that budded. For the place of the ark and the manner of its being moved see the TABERNACLE.
In the first journey of the children of Israel from Mount Sinai the ark of the covenant went before them to “search out a resting place for them,” type of God’s tender care for them. When the ark set forward Moses said, “Rise up, Lord, and let thine enemies be scattered”; and when it rested he said, “Return, O Lord, unto the many thousands of Israel” (Num. 10:33-3633And they departed from the mount of the Lord three days' journey: and the ark of the covenant of the Lord went before them in the three days' journey, to search out a resting place for them. 34And the cloud of the Lord was upon them by day, when they went out of the camp. 35And it came to pass, when the ark set forward, that Moses said, Rise up, Lord, and let thine enemies be scattered; and let them that hate thee flee before thee. 36And when it rested, he said, Return, O Lord, unto the many thousands of Israel. (Numbers 10:33‑36)). When they arrived at Jordan, the ark was carried by the priests 2000 cubits in front of the host that they might know the way they must go (Josh. 3:3-43And they commanded the people, saying, When ye see the ark of the covenant of the Lord your God, and the priests the Levites bearing it, then ye shall remove from your place, and go after it. 4Yet there shall be a space between you and it, about two thousand cubits by measure: come not near unto it, that ye may know the way by which ye must go: for ye have not passed this way heretofore. (Joshua 3:3‑4)), and the ark remained on the shoulders of the priests in the bed of the river, until all had passed over (Josh. 3:1717And the priests that bare the ark of the covenant of the Lord stood firm on dry ground in the midst of Jordan, and all the Israelites passed over on dry ground, until all the people were passed clean over Jordan. (Joshua 3:17)). This typifies association with Christ’s death and resurrection.
The ark accompanied them in their first victory: it was carried by the priests around Jericho. It is only in the power of Christ in resurrection that the saint can be victorious. The tabernacle was set up at Shiloh, and doubtless the ark was placed therein (Josh. 18:11And the whole congregation of the children of Israel assembled together at Shiloh, and set up the tabernacle of the congregation there. And the land was subdued before them. (Joshua 18:1)), though it may have been carried elsewhere. In Eli’s days when Israel was defeated they fetched the ark from Shiloh that it might save them, but they were again defeated, and the ark, in which they had placed their confidence instead of in Jehovah, was seized by the Philistines (1 Sam. 5:11And the Philistines took the ark of God, and brought it from Eben-ezer unto Ashdod. (1 Samuel 5:1)). When put into the house of their god Dagon the idol fell down before it on two occasions, and on the second was broken to pieces. Subsequently it was taken from Ashdod to Gath, and from Gath to Ekron, and the people were smitten by the hand of God in each city.
After seven months a new cart was made, to which two milch kine were yoked, and the ark sent back to the Israelites with a trespass offering to the God of Israel. The kine, contrary to nature, went away from their calves, and went direct to Beth-shemesh, for it was God who restored the ark. There God smote the men of the place for looking into the ark. It was then taken to Kirjath-jearim and placed in the house of Abinadab (1 Sam. 6; 1 Sam. 7:1-21And the men of Kirjath-jearim came, and fetched up the ark of the Lord, and brought it into the house of Abinadab in the hill, and sanctified Eleazar his son to keep the ark of the Lord. 2And it came to pass, while the ark abode in Kirjath-jearim, that the time was long; for it was twenty years: and all the house of Israel lamented after the Lord. (1 Samuel 7:1‑2)). See ABINADAB.
In after years David fetched the ark from thence on a new cart, but the ark being shaken, Uzzah put forth his hand to steady it, and was smitten of God. This frightened David and the ark was carried aside to the house of Obed-edom. The law had directed how the ark was to be carried, and the new cart was following the example of the Philistines; Uzzah disregarded God’s plain direction and heeded not the sacredness of that which represented the presence of God. David however, hearing that God had blessed the house of Obed-edom, again went for the ark, and now it was carried by the Levites according to divine order, and with sacrifices and rejoicing it was placed in the tabernacle or tent that David had pitched for it (2 Sam. 6).
When Solomon had built the temple, the ark was removed thither, and the staves by which it had been carried were taken out: the ark had now found its resting place in the kingdom of Solomon, whose reign is typical of the millennium. It is significant too that now there were only the two tables of stone in the ark (1 Kings 8:1-111Then Solomon assembled the elders of Israel, and all the heads of the tribes, the chief of the fathers of the children of Israel, unto king Solomon in Jerusalem, that they might bring up the ark of the covenant of the Lord out of the city of David, which is Zion. 2And all the men of Israel assembled themselves unto king Solomon at the feast in the month Ethanim, which is the seventh month. 3And all the elders of Israel came, and the priests took up the ark. 4And they brought up the ark of the Lord, and the tabernacle of the congregation, and all the holy vessels that were in the tabernacle, even those did the priests and the Levites bring up. 5And king Solomon, and all the congregation of Israel, that were assembled unto him, were with him before the ark, sacrificing sheep and oxen, that could not be told nor numbered for multitude. 6And the priests brought in the ark of the covenant of the Lord unto his place, into the oracle of the house, to the most holy place, even under the wings of the cherubims. 7For the cherubims spread forth their two wings over the place of the ark, and the cherubims covered the ark and the staves thereof above. 8And they drew out the staves, that the ends of the staves were seen out in the holy place before the oracle, and they were not seen without: and there they are unto this day. 9There was nothing in the ark save the two tables of stone, which Moses put there at Horeb, when the Lord made a covenant with the children of Israel, when they came out of the land of Egypt. 10And it came to pass, when the priests were come out of the holy place, that the cloud filled the house of the Lord, 11So that the priests could not stand to minister because of the cloud: for the glory of the Lord had filled the house of the Lord. (1 Kings 8:1‑11)); the manna had ceased when they ate of the old corn of the land, which is typical of a heavenly Christ; and the witness of Aaron’s rod was no longer needed now they were in the kingdom. The wilderness circumstances, in which the manna and the priesthood of Christ were so necessary, were now passed. These are both mentioned in Hebrews 9:4,4Which had the golden censer, and the ark of the covenant overlaid round about with gold, wherein was the golden pot that had manna, and Aaron's rod that budded, and the tables of the covenant; (Hebrews 9:4) for there the tabernacle, and not the temple is in contemplation.
No further mention is made of the ark: it is supposed to have been carried away with the sacred vessels to Babylon, and to have never been returned: if so there was no ark in the second temple nor in the temple built by Herod, nor do we read of the ark in connection with the temple described by Ezekiel. In Revelation 11:1919And the temple of God was opened in heaven, and there was seen in his temple the ark of his testament: and there were lightnings, and voices, and thunderings, and an earthquake, and great hail. (Revelation 11:19) the ark of God’s covenant is seen in the temple of God in heaven: symbol here of the resumption of God’s dealings with His earthly people Israel.

Strong’s Dictionary of Greek Words:

of uncertain derivation; a box, i.e. the sacred ark and that of Noah
KJV Usage: