Saul was thirty years old when he became king, and he reigned over Israel forty-two years. Saul chose three thousand men from Israel; two thousand were with him at Micmash and in the hill country of Bethel, and a thousand were with Jonathan at Gibeah in Benjamin. The rest of the men he sent back to their homes. 1 Samuel 13:1-2
Saul is starting to step into his reign. He's a young man with great ambitions. From the Scripture, he uses his "resources" carefully. No more than is absolutely necessary to finish the job. He entrusted his son Jonathan with a third of the men to go to Gibeah. Jonathan himself couldn't have been more than fifteen or sixteen. Ruling a land at 30 takes a lot of wisdom and courage. At such a young age, you will be criticized and harassed with every action you take.
We have seen rulers around the world who were very young. Many came into power through their parents. There are young leaders of varying degrees of power in all of our lands. We probably can't pray for these leaders enough. There are thousands of pressures and temptations to do things that would give them gratification in the short term but would undermine the laws of their land. Pray for your leaders.