A pledge or token
Show me a token for good; that they which hate me may see it, and be ashamed: because thou, Lord, hast holpen me, and comforted me. (Psalm 86:17)
Who hath also sealed us, and given the earnest of the Spirit in our hearts. (2 Corinthians 1:22)
Now he that hath wrought us for the selfsame thing is God, who also hath given unto us the earnest of the Spirit. (2 Corinthians 5:5)
Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory. (Ephesians 1:14)
See TOKEN