It is hard to offer a simple definition of praise because multiple words are used in the Bible to describe praise and its many different forms. The physical aspects of praise include bowing (1 Chron. 29:20), kneeling (Ps. 95:6), singing (Ps. 96:2), being quiet (Ps. 131:2), making noise (Luke 19:37), opening hands (1 Kings 8:54), lifting hands (Ps. 134:2), meditating (Ps. 145:5), exulting (Ps. 21:13), and living an obedient life before God (Rom. 15:7). The emotive aspects of praise include adoration (Ps. 9:1), prayer (Ps. 66:20), thanksgiving (Ps. 69:30), and joy (Ps. 71:23). Furthermore, praise can be given in any location and at any time. Finally, God is to be praised because of his creation, his good works, his love, and the life, death, and resurrection of his Son.
Generally, praise acknowledges and thanks God for all the good things in life. The Bible is full of examples of such praise; best known are the numerous psalms of praise in the Psalter. The Hebrew expression hallelu yah literally means “praise the Lord” and is used in both Testaments (Gk. hallēlouia). In the OT, God is portrayed as jealous for the praise of his people (Isa. 42:8); God is supposed to be the only object of praise. Conversely, Jesus cautions his followers to seek praise from God rather than from other humans (Matt. 6:1–4).
Not only are humans to be active in giving praise to God, but also all creation, including the sun, the moon, and the stars (Pss. 19:1–3; 148), takes part. The final psalm in the Psalter encourages “everything that has breath [to] praise the Lord” (Ps. 150:6). Throughout the OT praise was an important part of the tabernacle and temple worship, with specific people being assigned the duty of making music and singing praises to God (1 Chron. 6:31–32). Moses and Miriam broke into spontaneous praise after the Israelites had crossed the Red Sea and seen the Egyptians drowned (Exod. 15:1–21). David praised God not only in words but also in dance (2 Sam. 6:14). The angels praised God during the announcement of Jesus’ birth (Luke 2:13). Both James and Peter encouraged Christians to praise God in spite of their external circumstances (James 5:13; 1 Pet. 4:16). Revelation records the praising of God forever as one of the final eschatological events (19:1–10).