Romans 4:19 sets up the obstacle Abraham faced — his dead body — making his full persuasion in 4:21 remarkable.

Romans 8:38 expresses Paul's conviction of God's sustaining love — a similar confidence but applied to salvation rather than a specific promise.

Genesis 18:14 records the question 'Is anything too hard for the LORD?' — the very promise Abraham was fully convinced of here.

Jeremiah 32:17 proclaims nothing is too hard for God, directly affirming the same conviction Abraham held about God's power to fulfill His promise.

Luke 1:45 blesses Mary for believing the Lord's words would be fulfilled, mirroring Abraham's faith that God would do what He said.

2 Timothy 1:12 uses nearly identical language — 'I am convinced that he is able' — expressing the same confident trust in God's power to keep his promise.

Hebrews 11:19 highlights Abraham's faith that God could raise the dead, a concrete example of trusting God's power to fulfill an impossible promise.

Luke 1:45 blesses Mary for believing the Lord's words would be fulfilled, mirroring Abraham's faith that God would do what He said.

John 4:50 shows a similar confident faith in a promise — the official believed Jesus' word without visible evidence.

Acts 27:25 records Paul's full persuasion that God would do exactly as promised, mirroring Abraham's confidence here.

Galatians 3:6 also cites Genesis 15:6 on Abraham's faith being credited as righteousness, reinforcing the same argument.

Hebrews 11:11 directly parallels Sarah's faith that God was faithful to His promise — the same context of Abraham's full persuasion.

Hebrews 11:13 notes that the patriarchs died without receiving the promises — showing that Abraham's conviction was for things yet unseen.