For patience is necessary for you: that, doing the will of God, you may receive the promise.
(Hebrews 10.36)

For all the promises of God are in him.... Who also hath sealed us and given the pledge of the Spirit in our hearts.
(2 Corinthians 1.20-22)

You were signed with the Holy Spirit of promise, Who is the pledge of our inheritance, to the redemption of acquisition, unto the praise of his glory.
(Ephesians 1.12-14)

Where there is an image, there is similitude but not equality.... as in a mirror, there is the image of a man because it is expressed from him; and it is also necessarily a similitude; nevertheless, there is no equality because many things are lacking in the image which nevertheless are in the thing from which it is expressed. And where there is equality, there is similitude but no image.
(Saint Augustine)

For what God is not is clearer to us than what He is. Therefore similitudes drawn from things farthest away from God form within us a truer estimate that God is above whatsoever we may say or think of Him.
(Saint Thomas Aquinas)

Comedy is an imitation of life, a mirror of custom, an image of truth.
(Cicero)