"The people were weary and terrified, yet if they had held back when Moses bade them advance, God would never have opened the path for them. It was “by faith” that “they passed through the Red Sea as by dry land.” Hebrews 11:29 . In marching down to the very water, they showed that they believed the word of God as spoken by Moses. They did all that was in their power to do, and then the Mighty One of Israel divided the sea to make a path for their feet. PP 290.1"
"And the children of Israel went into the midst of the sea upon the dry ground: and the waters were a wall unto them on their right hand, and on their left."
EGW explicitly quotes Hebrews 11:29 and connects it to the event described in Exodus 14:22, emphasizing the role of faith.
"By faith they passed through the Red sea as by dry land: which the Egyptians assaying to do were drowned."
EGW directly quotes Hebrews 11:29 and elaborates on the faith required to enter the Red Sea.
"The great lesson here taught is for all time. Often the Christian life is beset by dangers, and duty seems hard to perform. The imagination pictures impending ruin before and bondage or death behind. Yet the voice of God speaks clearly, “Go forward.” We should obey this command, even though our eyes cannot penetrate the darkness, and we feel the cold waves about our feet. The obstacles that hinder our progress will never disappear before a halting, doubting spirit. Those who defer obedience till every shadow of uncertainty disappears and there remains no risk of failure or defeat, will never obey at all. Unbelief whispers, “Let us wait till the obstructions are removed, and we can see our way clearly;” but faith courageously urges an advance, hoping all things, believing all things. PP 290.2"
"Have not I commanded thee? Be strong and of a good courage; be not afraid, neither be thou dismayed: for the Lord thy God is with thee whithersoever thou goest."
Both passages encourage courage and obedience to God even in the face of fear and uncertainty. Joshua 1:9 is a general command to be strong and courageous, while EGW applies this principle to the Christian life, specifically in the context of facing difficulties and obeying God's commands.
"God never leads His children otherwise than they would choose to be led, if they could see the end from the beginning and discern the glory of the purpose which they are fulfilling as co-workers with Him."
"Trust in the LORD with all thine heart; and lean not unto thine own understanding. In all thy ways acknowledge him, and he shall direct thy paths."
Ellen White provides the rationale behind "lean not unto thine own understanding" — God's leading is always what we would choose if we had His perspective. This directly reinforces the trust Proverbs 3:5-6 calls for.