Cast thy burden upon the LORD, and he shall sustain thee: he shall never suffer the righteous to be moved.
The Psalmist's confidence in the Lord suggests the encouraging self-exhortation to cast his burden upon the Lord. His spiritual and higher nature addresses his lower and weaker nature (Psalms 27:14; Psalms 42:5; Psalms 42:11). The relation of this verse to Psalms 55:16-21 shows that "cast thy burden upon the Lord" is primarily addressed to himself; secondarily, it belongs to all God's children when in distress, as the Psalmist is their representative. The Hebrew ( yªhaabªkaa (H3053)) for "burden" is literally, 'thy gift," the portion assigned thee. The Septuagint and Syriac translate, 'thy anxiety;' Kimchi, "thy burden," as the word is used in Arabic (cf. 1 Peter 5:7).
And he shall sustain thee. Thes words favour the sense, not thy burden of distress, but thy maintenance given by God, (Genesis 45:11; Genesis 48:15, end; Psalms 23:5). The believer casts the provision of this gift upon Him to whom he daily saith, "Give us this day our daily bread."
He shall never suffer the righteous to be moved - finally from their confidence in the Lord, nor to be perpetually agitated by trials (Psalms 121:3).