1. Christ saves us and gives us strength. (Hab 3:17-19)
    Lk 1:68-71, Lk 2:25-32, 2 Cor 12:9-10, Phil 4:13

In the Old Testament, the prophet Habakkuk praised God who would save the people of Israel in the future even though Israel was destroyed. (Hab 3:17-19)

Hab 3:17 Although the fig tree shall not blossom, neither shall fruit be in the vines; the labour of the olive shall fail, and the fields shall yield no meat; the flock shall be cut off from the fold, and there shall be no herd in the stalls:
18 Yet I will rejoice in the Lord, I will joy in the God of my salvation.
19 The Lord God is my strength, and he will make my feet like hinds’ feet, and he will make me to walk upon mine high places. To the chief singer on my stringed instruments.

God sent Christ as the descendant of David to save the people of Israel. (Luke 1:68-71)

Luke 1:68 Blessed be the Lord God of Israel; for he hath visited and redeemed his people,
69 And hath raised up an horn of salvation for us in the house of his servant David;
70 As he spake by the mouth of his holy prophets, which have been since the world began:
71 That we should be saved from our enemies, and from the hand of all that hate us;

Simeon, who lives in Jerusalem, was waiting for Christ, the comfort of Israel. When he saw the baby Jesus, he knew that Jesus was the Christ and praised God. (Luke 2:25-32)

Luke 2:25 And, behold, there was a man in Jerusalem, whose name was Simeon; and the same man was just and devout, waiting for the consolation of Israel: and the Holy Ghost was upon him.
26 And it was revealed unto him by the Holy Ghost, that he should not see death, before he had seen the Lord’s Christ.
27 And he came by the Spirit into the temple: and when the parents brought in the child Jesus, to do for him after the custom of the law,
28 Then took he him up in his arms, and blessed God, and said,
29 Lord, now lettest thou thy servant depart in peace, according to thy word:
30 For mine eyes have seen thy salvation,
31 Which thou hast prepared before the face of all people;
32 A light to lighten the Gentiles, and the glory of thy people Israel.

When we are weak, we know more that Christ is our strength and strength. (2 Corinthians 12:9-10, Phil 4:13)

2 Corinthians 12:9 And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
10 Therefore I take pleasure in infirmities, in reproaches, in necessities, in persecutions, in distresses for Christ’s sake: for when I am weak, then am I strong.

Phil 4:13 I can do all things through Christ which strengtheneth me.