Passage
Cast thy burden vpon the Lord, and hee shall nourish thee: he wil not suffer the righteous to fall for euer.
Cast thy burden vpon the Lord, and hee shall nourish thee: he wil not suffer the righteous to fall for euer.
Psalms 55:20 Hee layed his hande vpon such, as be at peace with him, and he brake his couenant.
Psalms 55:21 The wordes of his mouth were softer then butter, yet warre was in his heart: his words were more gentle then oyle, yet they were swordes.
Psalms 55:22 Cast thy burden vpon the Lord, and hee shall nourish thee: he wil not suffer the righteous to fall for euer.
Psalms 55:23 And thou, O God, shalt bring them downe into the pitte of corruption: the bloudie, and deceitfull men shall not liue halfe their dayes: but I will trust in thee.
The verse centers on "cast", "burden", "vpon", "lord", "shall", "nourish", "thee", and "suffer". It is saying that the verse draws attention to "cast" and "burden", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 21's "The wordes of his mouth were softer..." into verse 23's "And thou O God shalt bring them...", so "cast" and "burden" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "cast" and "burden" with trust shaped by these words, not by a vague optimism outside the passage.