Good day
2 Corinthians 10:12,13
We do not dare to classify or compare ourselves with some who commend themselves. When they measure themselves by themselves and compare themselves with themselves, they are not wise. We, however, will not boast beyond proper limits, but will confine our boasting to the sphere of service God himself has assigned to us, a sphere that also includes you.
I'm sure all of us have found ourselves in various situations where we've compared ourselves to others. I'm not referring to the type where we've compared ourselves to others as a means of establishing/tracking certain goals/aspirations but rather the type where, when we see the success of others (and this relates to any area of life), it caused us to feel frustrated and even angry where we became critical and judgemental or of towards these people. On the other side of that coin, when we succeed at something, it can cause us to become proud and boastful, feeling like we've accomplished something when others haven't and that could cause us to look down on them. In both instances, the Bible warns us not to judge: (Matthew 7:1-5, Romans 2:1-4) and also not to be boastful (1 Corinthians 1:31, 1 Corinthians 15:10, Deuteronomy 8:11-19, 1 Corinthians 12)
We can see why the opening passage above says that when we compare ourselves - we are unwise. What we should be doing of course, regardless of the achievements of others or our own, is to respond with love:
Romans 13:8-10
Owe nothing to anyone except to love and seek the best for one another; for he who [unselfishly] loves his neighbor has fulfilled the [essence of the] law [relating to one’s fellowman]. The commandments, “You shall not commit adultery, you shall not murder, you shall not steal, you shall not covet,” and any other commandment are summed up in this statement: “You shall love your neighbor as yourself.” Love does no wrong to a neighbor [it never hurts anyone]. Therefore [unselfish] love is the fulfillment of the Law.
Apart from the above, another reason, and I believe the one the Holy Spirit wants to highlight for this particular message, is that comparing ourselves to others can cause us to become distracted and throw us off course from focusing on what God has called us to. (Please read Part 2)