Isaiah had already described how Jehovah would fortify, or strengthen, his people, saying: “Jehovah will come with power, and his arm will rule for him.” (Isa. 40:10) The Bible often uses the word “arm” symbolically to signify power. So the statement that Jehovah’s “arm will rule” reminds us that Jehovah is a powerful King. He used his unbeatable strength to support and defend his servants in the past, and he continues to strengthen and protect those who trust in him today.​—Deut. 1:30, 31; Isa. 43:10, ftn.

¹⁸ Consider an example of the beautiful word picture Isaiah uses to illustrate how Jehovah protects us. He refers to Jehovah as a shepherd and to God’s servants as lambs. Isaiah says of Jehovah: “With his arm he will gather together the lambs, and in his bosom he will carry them.” (Isa. 40:11) When we sense Jehovah’s strong arms wrapped around us, we feel protected and calm.