Jesus warns us to consider the cost of true and useful discipleship with a call to give our full allegiance to Him. I. Christ's disciples must give Him their allegiance. A. Regarding family (vv. 25-26a) B. Regarding self (vv. 26b-27) II. Christ's disciples must calculate the cost. A Parable of the tower builder (vv. 28-30) B. Parable of the warring king (vv. 31-32) C. Readiness to abandon all possessions (v. 33) III. Christ's disciples are distinct. A. Useful (vv. 34-35a) B. Have ears to hear (v. 35b)