Where is Yah mentioned in the Bible?

Answer 1

The word appears many times names throughout The Bible because it is the poetic and shortened form of the holy name of YHWH. It first appears in Ex 15:2 which reads 'ozziy wezimrah Yahh = "my strength and my song is Yah". There's a whole host of other places too. Unfortunately, many English versions tend to translate rather than transliterate the shortened name. See these as well for the name:

Exod 15:2; 17:16; Ps 68:5, 19; 77:12; 89:9; 94:7, 12; 102:19; 104:35; 105:45; 106:1, 48; 111:1; 112:1; 113:1, 9; 115:17f; 116:19; 117:2; 118:5, 14, 17ff; 122:4; 130:3; 135:1, 3f, 21; 146:1, 10; 147:1, 20; 148:1, 14; 149:1, 9; 150:1, 6; Isa 12:2; 26:4; 38:11.

- Adoniqam

Answer 2

It means "God". It is usually a suffix or part of a hyphenation.

Answer 3

You will find the Hebrew word 'Yah' throughout the Hebrew Bible - 155 hits in the Complete Jewish Bible.