Over the centuries, people have tried to out think and out maneuver God. They have ignored Him and His word. But, no matter what men and women might do, God just laughs and does whatever He wants and needs to do. This is especially obvious when God established Jesus as the Christ as King in His kingdom.
In life and death situations, on a battlefield, in times of great distress, we need someone there for us to say: "I've got your back." This is the essence of love. When someone picks up the slack, stands in the gap, helps bear the burden, comes to the rescue - this is love. Jesus demonstrated it to the full, and His people are called to do the same for one another.
Timothy received glowing praise from Paul about his devotion to his work in the kingdom. Timothy had worked hard and demonstrated a willingness to sacrifice for the cause of Christ. But Timothy still had difficulties to overcome, and he needed continuing instruction and encouragement from Paul.