4:16

Let us, then, approach . . . with freeness of speech: Though sinful, Christians can approach Jehovah by worshipping him acceptably and praying to him freely. They can do so because Jesus, as “a great high priest,” applies the benefits of the ransom sacrifice in their behalf. (Heb 4:14; 10:19-22, 35; see study notes on Eph 3:12; Heb 3:6.) The form of the Greek verb rendered “let us . . . approach” indicates that a Christian can freely approach God’s throne at any time. However, this “freeness of speech” does not mean that Christians are free to speak to Jehovah in an irreverent or overly casual manner. They should pray in a respectful and dignified manner with full faith and confidence that Jehovah is willing to hear their prayers.​—1Jo 3:21, 22; 5:14.

the throne of undeserved kindness: In the Bible, “throne” is often used figuratively to signify a seat of ruling authority. Jehovah’s throne of undeserved kindness thus represents his way of ruling, which is characterized by his generous love and kindness. (See Glossary, “Undeserved kindness.”) Such kindness moved Jehovah to provide a way for imperfect humans to approach his royal presence. Paul urges the Hebrew Christians to take advantage of this great undeserved kindness, which is extended by means of Jesus Christ, the “great high priest,” on the basis of his ransom sacrifice. (Heb 4:14; see study notes on Joh 1:14.) Thus, when approaching God in prayer, true Christians can trust that they will “receive mercy and find undeserved kindness . . . at the right time”​—whenever it is needed.