Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand.--Ephesians 6:13
God is calling you to enter His service. Put on the whole armor of God, that you may be able to stand against the wiles of the devil, Bring into the work an earnest desire to learn how to bear responsibilities. With strong arms and brave hearts go forth into the conflict all must enter, a conflict which will grow more and more severe as we approach the closing struggle. (Manuscript 18A, 1901)
Men who are thus affected by circumstances should remain at their homes and employ their physical and mental strength in a less responsible position where they will not be liable to meet such strong opposition. If everything moves smoothly, they may pass for very good, devotional men. But these are not the ones whom the Master will send to do His work, for this is opposed by those who are emissaries of Satan.
Satan also, and his host of evil angels, will be arrayed against them. God has made provision for the men whom He has called to do His work, that they may come off conquerors in every contest. Those who follow His directions will never meet with defeat....
We are engaged in an exalted, sacred work. Those who profess to be called to teach the truth to those who sit in darkness should not be bodies of unbelief and darkness themselves. They should live near to God, where they can be all light in the Lord. The reason why they are not so is that they are not obeying the word of God themselves; therefore doubts and discouragements are expressed, when only words of faith and holy cheer should be heard. (Testimonies for the Church, vol. 2, 515-516)
REFLECTION: Christian attainments can be reached only through much prayer and constant watchfulness....With faith in God as their armor, and with His word as their weapon of warfare, they would be supplied with an inner power that would enable them to turn aside the attacks of the enemy. (The Acts of the Apostles, 307)