All the promises of God are "Yes" in Christ, to which we say, "Amen"
Scripture reference
2 Corinthians 1:20 (ASV)
20For how many soever be the promises of God, in him is the yea: wherefore also through him is the Amen, unto the glory of God through us.
Stories
A woman with only one sovereign left in her bank for the poor felt the urge to give it away to a widow in need on New Year's day. Despite her hesitation, she remembered the passage, "The Lord is able to give thee much more than this," and decided to give the sovereign away. Later that evening, she received a letter from a stranger with five pounds and a box of soap to donate to the poor, proving the truth of the passage she remembered earlier.