1 Corinthians 3:1-7
"And I, brethren, could not speak to you as to spiritual people but as to carnal, as to babes in Christ. 2 I fed you with milk... 3 for you are still carnal. For where there are envy, strife, and divisions among you, are you not carnal and behaving like mere men?...6 I planted, Apollos watered, but God gave the increase. 7 So then neither he who plants is anything, nor he who waters, but God who gives the increase."
Paul makes the point that we souldnt make too much of human preachers and teachers, and we need to take heed. Dont put John Calvin, Martin Luther, RC Sproul, John piper on a pedestal, they are tools God uses to conceive and grow believers. God is causing the growth, but he wants to use us to do it. Don't idolize God's instruments, but don't despise them, either. The same applies to the sacraments. Don't wave flags for the way you do the sacraments in a way that divides or sets you above the rest of the church. But don't despise them, either. God wants to use them to help you grow.