A prayer asking for God's help to keep the psalmist from joining the evil ways of the wicked.
st. 1 = vv. 1-2
st. 2 = vv. 3-4
st. 3 = v. 5a
st. 4 = vv. 5b-7
st. 5 = vv. 8-10
Beginning with a plea that God hear his prayer (st. 1), the psalmist asks the LORD to keep him from yielding to wicked people's enticements to join them in their evil deeds (st. 2; see Prov. 1:10-19). It is better to suffer chastisement that turns from sinful ways than to enjoy the momentary fruits of wickedness (st. 3). They are a trap that can lead only to destruction (st. 4). Keep me from these ensnaring enticements, 0 LORD, says the psalmist, to preserve me from certain death (st. 5). Marie J. Post (PHH 5) versified Psalm 141 in 1985 for the Psalter Hymnal.
Psalm 141 serves especially well to conclude an evening service. In churches that have a history of daily prayer services, this psalm is traditionally sung during evening prayer.
--Psalter Hymnal Handbook