NT-EPISTLES.filter - nkjv guarantee:

nkjv@2Corinthians:1:22 @ who also has sealed us and given us the Spirit in our hearts as a guarantee.

nkjv@2Corinthians:5:5 @ Now He who has prepared us for this very thing is God, who also has given us the Spirit as a guarantee.

nkjv@Ephesians:1:14 @ who is the guarantee of our inheritance until the redemption of the purchased possession, to the praise of His glory.