The passage tells us that he took the baby in his arms. Simeon was not finished. The burden Mary bore, not just in the birth of Jesus at Bethlehem that first Christmas, was a burden she carried her whole life through and in many different ways. It was part of what was entailed in Jesus being the Lamb of God who came to take away the sins of the world. The Lamb Who Was Loved.
All parents can tell of proud moments related to their children.
I remember a basketball game some years ago, when Nate was playing in the YMCA youth league. That was illegal in this age group, and all the players had to move away from the lane and behind the free throw line, so that Nate stood alone at the foul line. He shot twice, and both times it was a swish. We went ahead by one point and never looked back. We won the game, and Nate's free throws were the turning point.