Psalms 136:16

To him which led his people through the wilderness - For all the manifestations of his care during a period of forty years.

For his mercy ... - That is, his mercy was to be measured by all the protection extended over them; by all the provision made for their needs; by all that God did to defend them; by all his interposition when attacked by their enemies; by safely bringing them to the land to which he had promised to conduct them.