"“Forgive us our sins; for we also forgive everyone that is indebted to us.”— Luke 11:4 . Jesus teaches that we can receive forgiveness from God only as we forgive others. It is the love of God that draws us unto Him, and that love cannot touch our hearts without creating love for our brethren. MB 113"
"And forgive us our sins; for we also forgive every one that is indebted to us. And lead us not into temptation; but deliver us from evil."
Ellen White directly references Luke 11:4 in this passage.
"After completing the Lord's Prayer, Jesus added: “If ye forgive men their trespasses, your heavenly Father will also forgive you: but if ye forgive not men their trespasses, neither will your Father forgive your trespasses.” He who is unforgiving cuts off the very channel through which alone he can receive mercy from God. We should not think that unless those who have injured us confess the wrong we are justified in withholding from them our forgiveness. It is their part, no doubt, to humble their hearts by repentance and confession; but we are to have a spirit of compassion toward those who have trespassed against us, whether or not they confess their faults. However sorely they may have wounded us, we are not to cherish our grievances and sympathize with ourselves over our injuries; but as we hope to be pardoned for our offenses against God we are to pardon all who have done evil to us. MB 113.3"
"For if ye forgive men their trespasses, your heavenly Father will also forgive you:"
EGW directly quotes and expands upon Matthew 6:14, making the connection explicit. The passage is a clear allusion to the biblical text.