2:12 in this present world. This is a capsule summary of the Christian life. Once having received the grace of God in salvation (Titus 2:11), we should live godly and righteous lives in this present world (Titus 2:12), waiting expectantly for the return of Christ (Titus 2:13). Note that we are to be looking for Him, not for the Antichrist or a world government or any other sign. His coming is always imminent, with nothing else required to precede it.
2:13 that blessed hope. The second coming of Christ, specifically the very first event of that coming, namely, the resurrection of those who died in Christ and the rapture of those believers still living when He comes, is the “blessed hope” of the Christian. When a believer is truly looking for that hope (notice that he is to be looking for the imminent coming of Christ), it is a great incentive to witnessing and godly living. “Every man that hath this hope in Him purifieth himself, even as He is pure” (I John 3:3).