Then Jesus came to them and said, "All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.” Matthew 28:18-20
"Our Lord makes a disciple His own possession, He becomes responsible for him. 'Ye shall be witnesses unto Me.' The spirit that comes in is not that of doing anything for Jesus, but of being a perfect delight to Him. The secret of the missionary is--I am His, and He is carrying out His enterprises through me. Be entirely His." Oswald Chambers, My Utmost for His Highest, September 4 reading.
God calls for complete surrender of our lives to Him.
Some things we lay on the altar He will burn up, because they aren't good for us and never will be.
Other things He will purify, and sanctify, and give back to us. But we have to let go of everything.
God is good and He is sovereign. We have to trust Him, and we can trust Him.