Never Attempt to Carry Your Own Burden,

but learn to roll it upon the Lord. Seek to deal with Him about everything; if you have any trial, any perplexity, cast it upon Him. Then you will find out how ready He is to help, and you will be able to say, even in view of all these circumstances, “I am happy.”
If we are unhappy, the fault lies with ourselves. There is no reason why we should not be happy children. Our Father loves us, and He will lead us safely through. Having such a Father, it may well be said of us, “Happy art thou, O Israel; who is like unto thee, O people saved by the Lord, the shield of thy help, and who is the sword of thy excellency.”
These Israelites were happy because they had such a God. Look how He delivered them and saved them. It was He who delivered them from the Egyptians, who led them through the Red Sea, destroying the hosts of Pharaoh. It was He who led them through the wilderness, provided them with heavenly food, and water from the rock, and finally led them into the land of promise.