"the Institute, he would not in so doing remove or overcome the defects in his character. He has a work before him to overcome these defects if he would be among the number who are to stand without fault before the throne of God, having come up through great tribulation, and having washed their robes of character and made them white in the blood of the Lamb. The provision has been made for us to wash. The fountain has been prepared at infinite expense, and the burden of washing rests upon us, who are imperfect before God. The Lord does not propose to remove these spots of defilement without our doing anything on our part. We must wash our robes in the blood of the Lamb. We may lay hold of the merits of the blood of Christ by faith, and through His grace and power we may have strength to overcome our errors, our sins, our imperfections of character, and come off victorious, having washed our robes in the blood of the Lamb. 3T 183.1"
"And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb."
EGW directly quotes and elaborates on the imagery of Revelation 7:14, making the connection undeniable.