This word "Selah" occurs for the first time in Psa 3. It is
used 71 times in the Psalms and three other times (all in Hab 3). The scholars
have a great deal of difficulty with this word, and widely varying opinions are
offered as to its meaning and purpose. One thought emerges, however, from the
tangle of conflicting definitions and opinions: "Selah", whether a musical term
or not, carries the implication of pausing or resting (LXX, Young). It is
therefore a thought link for reflection or meditation. When occurring at the end
of a psalm "Selah" forms a close link with the succeeding psalm. Therefore on
several occasions (Psalms 3/4, 9/10, 24/25, and 46/47) we have the plain
indication to join two psalms together in our study.
"Selah" may also refer to the Rock (Heb "Sela") -- a common
name of God in the Psalms (Psa 18:2; 31:3; 40:2; 42:9; 71:3; 78:16), probably
with special reference to the altar-rock in Zion (see esp Isa 8:14; 28:16; Psa
118:22; and WBS 111-116), upon which sacrifice was offered to Him. Thus "Selah"
may indicate that the singers should pause for reflection or meditation, while
the priests proceed to offer the sacrifice.
Regarding sacrifice, note esp the context of "Selah" in the
following passages: Psa 20:3; 24:6; 32:5; 39:11; 44:8; 54:5; 57:3,6; 61:4; 81:7;