Matthew 7:7 (BSB)

Ask, and it will be given to you; seek, and you will find; knock, and the door will be opened to you.

From Matthew 7. Also in the ESV.

Commentary on Matthew 7:7

• John Calvin (Reformed), Calvin's Commentaries on Matthew 7:7: Matthew 7:7. Ask, and it shall be given you It is an exhortation to prayer: and as in this exercise of religion, which ought to be our first concern, we are so careless and sluggish, Christ presses the same thing upon us under three forms of expression.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Matthew 7:7-11: Our Saviour, in the foregoing chapter, had spoken of prayer as a commanded duty, by which God is honoured, and which, if done aright, shall be rewarded; here he speaks of it as the appointed means of obtaining what we need, especially grace to obey the precepts he had given, some of which are so displeasing to flesh and blood. I.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Matthew 7:7: Ask and it shall be given you,.... This is to be understood of asking of God in prayer, for such things as are wanting; whether of a temporal nature, as food and raiment, which Christ, in the former chapter, had warned against an immoderate and anxious concern for; or of a spiritual nature, as grace, and wisdom to behave in a proper manner, both towards...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on Matthew 7:7: Verse 7. Ask, and it shall be given you, etc. There are here three different forms presented of seeking the things which we need from God--asking, seeking, and knocking. The latter is taken from the act of knocking at a door for admittance. See . The phrases signify to seek with earnestness, and diligence, and perseverance. The promise is, that what we seek shall be given us.