1 John 5:14 (BSB)

And this is the confidence that we have before Him: If we ask anything according to His will, He hears us.

From 1 John 5. Also in the ESV.

Commentary on 1 John 5:14

• John Calvin (Reformed), Calvin's Commentaries on 1 John 5:14: 14 And this is the confidence He commends the faith which he mentioned by its fruit, or he shews that in which our confidence especially is, that is, that the godly dare confidently to call on God; as also Paul speaks in Ephesians 3:12, that we have by faith access to God with confidence; and also in Romans 8:15, that the Spirit gives us a mouth to cry Abba, Father.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 1 John 5:14-17: Here we have, I. A privilege belonging to faith in Christ, namely, audience in prayer: This is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us, Jo1 5:14. The Lord Christ emboldens us to come to God in all circumstances, with all our supplications and requests. Through him our petitions are admitted and accepted of God.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 1 John 5:14: And this is the confidence that we have in him,.... Either in God, to whom prayer is made; or in the Son of God, through whose blood and righteousness believers in him have confidence with God at the throne of grace; they can come with boldness and intrepidity, and use freedom and liberty of speech, as the word here used signifies; especially when they have...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on 1 John 5:14: Verse 14. And this is the confidence that we have in him. Marg., concerning. Greek, "towards him," or in respect to him--προςαυτον. The confidence referred to here is that which relates to the answer to prayer. The apostle does not say that this is the only thing in respect to which there is to be confidence in him, but that it is one which is worthy of special consideration.