Psalm 55:17 — Evening and morning and at noon I will pray, and cry aloud, and He shall hear my voice.

Psalm 66:12, 13 — If I regard iniquity in my heart, the Lord will not hear. But certainly God has heard me; he has attended to the voice of my prayer.

Proverbs 15:29 — The LORD… hears the prayer of the righteous.

Luke 6:12 — Now it came to pass in those days that He (Jesus) went out to the mountain to pray, and continued all night in prayer to God.

Acts 2:42 — And they continued steadfastly in the apostles’ doctrine and fellowship, in the breaking of bread, and in prayers.

Romans 12:12 — Rejoicing in hope, patient in tribulation, continuing steadfastly in prayer.

2 Corinthians 1:11 — you also helping together in prayer for us, that thanks may be given by many persons on our behalf

Ephesians 6:18 — Praying always with all prayer and supplication in the Spirit, being watchful to this end with all perseverance and supplication for all the saints.

Philippians 4:6, 7 — Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.

James 5:16 — The effective, fervent prayer of a righteous man avails much.