What can we learn from the example of Jehoash? He was like a tree with shallow roots that depended on the support of a stake. When the stake​—Jehoiada—​was gone and the winds of apostasy blew, Jehoash toppled over. This powerfully illustrates that our fear of God must not depend solely on the good influence of fellow Christians, including family members. To remain spiritually strong, we must strengthen our own godly devotion and fear through regular study, meditation, and prayer. (Jer. 17:7, 8; Col 2:6, 7) Jehovah does not really ask much of us. What he requires is summed up at Ecclesiastes 12:13, which says: “Fear the true God and keep his commandments, for this is the whole obligation of man.” When we fear God, we will be able to face future tests and stand firm. Nothing will be able to damage our friendship with Jehovah. w23.06 19 ¶17-19

God’s guarantee begins with the introduction: “The One seated on the throne said.” (Rev. 21:5a) These words introduce one of only three instances in the book of Revelation when Jehovah speaks in the visions. So this guarantee is provided, not by a powerful angel, not even by the resurrected Jesus, but by Jehovah himself! This fact highlights the trustworthiness of the words that follow. Why is that so? Because Jehovah “cannot lie.” (Titus 1:2) That statement makes the words that we read at Revelation 21:5, 6 completely reliable. Consider the word “Look!” The Greek term translated “look!” is used repeatedly in the book of Revelation. What follows the exclamation? God’s statement: “I am making all things new.” True, Jehovah is speaking about future changes, but for him this promise is so certain to come true that he speaks of these changes as if they were already taking place.​—Isa. 46:10. w23.11 3-4 ¶7-8

The apostle Peter struggled with his weaknesses. Consider a few examples. When Jesus explained how he would suffer and die in fulfillment of Bible prophecy, Peter rebuked him. (Mark 8:31-33) Repeatedly, Peter and the other apostles argued about who was the greatest. (Mark 9:33, 34) On the last night before Jesus’ death, Peter impulsively cut off a man’s ear. (John 18:10) That same night, Peter gave in to fear and three times denied knowing his friend Jesus. (Mark 14:66-72) That led Peter to weep bitterly. Jesus did not give up on his disheartened apostle. After Jesus was resurrected, he gave Peter the opportunity to reaffirm his love for him. Jesus invited Peter to serve humbly as a shepherd of his sheep. (John 21:15-17) Peter responded positively. He was in Jerusalem on the day of Pentecost and among the first to be anointed by holy spirit. w23.09 22 ¶6-7