"Every promise in the word of God furnishes us with subject matter for prayer, presenting the pledged word of Jehovah as our assurance. Whatever spiritual blessing we need, it is our privilege to claim through Jesus. We may tell the Lord, with the simplicity of a child, exactly what we need. We may state to Him our temporal matters, asking Him for bread and raiment as well as for the bread of life and the robe of Christ's righteousness. Your heavenly Father knows that you have need of all these things, and you are invited to ask Him concerning them. It is through the name of Jesus that every favor is received. God will honor that name, and will supply your necessities from the riches of His liberality. MB 133.1"
"Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:"
The EGW passage directly reflects the principle of asking and receiving as taught in Matthew 7:7, encouraging believers to pray for their needs based on God's promises.
"But do not forget that in coming to God as a father you acknowledge your relation to Him as a child. You not only trust His goodness, but in all things yield to His will, knowing that His love is changeless. You give yourself to do His work. It was to those whom He had bidden to seek first the kingdom of God and His righteousness that Jesus gave the promise, “Ask, and ye shall receive.” John 16:24 . MB 133.2"
"Hitherto have ye asked nothing in my name: ask, and ye shall receive, that your joy may be full."
Ellen White directly references John 16:24 in this passage.
"The gifts of Him who has all power in heaven and earth are in store for the children of God. Gifts so precious that they come to us through the costly sacrifice of the Redeemer's blood; gifts that will satisfy the deepest craving of the heart, gifts lasting as eternity, will be received and enjoyed by all who will come to God as little children. Take God's promises as your own, plead them before Him as His own words, and you will receive fullness of joy. MB 133.3"
"If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father which is in heaven give good things to them that ask him?"
Both passages discuss God's willingness to give good gifts to those who ask. The EGW passage amplifies this by emphasizing the costliness of these gifts and the joy they bring.