John Gill Commentary Psalms 136:25

"Who giveth food to all flesh; For his lovingkindness [endureth] for ever." — Psalms 136:25 (ASV)

Who gives food to all flesh
To all creatures; the beasts of the field, and fowls of the air, the young ravens that cry, (Psalms 145:15Psalms 145:16) (147:9) .

To all men their daily food; to Jews and Gentiles, good men and bad men, (Matthew 6:11) (Acts 14:16Acts 14:17) ;

and spiritual food to all that belong to Christ, who are flesh of his flesh, and bone of his bone; even himself, the bread of life, the wholesome truths of the Gospel, and its refreshing ordinances;

for his mercy [endures] for ever ;
he continues to have compassion on his creatures, and opens his hand of providence, and supplies their wants; he is ever mindful of his covenant of grace and mercy, and therefore gives meat to them that fear him, (Psalms 111:5) .