God's Side
"God so loved the world, that He gave His only begotten Son.”
Your Side
"That whosoever believeth in Him should not perish, but have everlasting life.”
Remark, the loving and giving are God's side; the believing and having are your side.
Now, do not follow the bad example of many. They are trying to change sides with God—trying to do the loving and giving, and wanting Him to do the believing and having.
That is, they are trying to love God and trying to serve God; then they hope He will believe in their earnestness, and receive their good works, and give them eternal life on account of it all.
You must keep your own side of the line. God has loved you, and given His Son for you; that is His part. Now do you really believe in Him? If so, then God says you shall not perish, but have—now—here in this world—everlasting life. Then, being delivered from your enemies, you can serve Him without fear, in holiness and righteousness, all the days of your life.