Esias 40:10

10 Behold the Lord! The Lord is coming with strength, and arm is with power: behold, his reward is with him, and work before him.

Esias 40:10 In-Context

8 The grass withers, and the flower fades: but the word of our God abides for ever.
9 O thou that bringest glad tidings to Zion, go up on the high mountain; lift up thy voice with strength, thou that bringest glad tidings to Jerusalem; lift it up, fear not; say unto the cities of Juda, Behold your God!
10 Behold the Lord! The Lord is coming with strength, and arm is with power: behold, his reward is with him, and work before him.
11 He shall tend his flock as a shepherd, and he shall gather the lambs with his arm, and shall soothe them that are with young.
12 Who has measured the water in his hand, and the heaven with a span, and all the earth in a handful? Who has weighed the mountains in scales, and the forests in a balance?

The Brenton translation of the Septuagint is in the public domain.