Strong's Concordance G728

Original Word: ἀῤῥαβών
Transliteration: arrhabṓn
Phonetic Spelling: ar-hrab-ohn'
[ἀῤῥαβών] of Hebrew origin (H6162); a pledge, i.e. part of the purchase-money or property given in advance as security for the rest

Usages throughout the bible

2 Corinthians 1:22 - Who hath also sealed us, and given the earnest G728 of the Spirit in our hearts.

2 Corinthians 5:5 - Now he that hath wrought us for the selfsame thing is God, who also hath given unto us the earnest G728 of the Spirit.

Ephesians 1:14 - Which is the earnest G728 of our inheritance until the redemption of the purchased possession, unto the praise of his glory.