The second of these five Hallelujah Psalms, the EXODUS Psalm.
Praise ye THE LORD. Hebrew Hallelu-JAH. App-4. Not "inserted by mistake in verse Psalms 147:1 instead of in the title", but required here by the Structure. See the Structure.
For. Not "come into the first line from the second by dittography", but an essential part of the second line, which is repeated by the Figure of speech Anadiplosis (App-6) in the third line. The first verse thus does contain two lines (beside the "Hallelujah") like all the other verses.
God. Hebrew. Elohim. App-4.