What does the word Amen mean?

Amen means: It is true and certain. For God has much more certainly heard my prayer than I feel in my heart that I desire this of Him.

Proofs

• Amen means: It is true and certain. For God has much more certainly heard my prayer than I feel in my heart that I desire this of Him. (Isaiah 65:24; 2 Corinthians 1:20; 2 Timothy 2:13)