a) Establish the fact that all men are sinners.

Isaiah 64:6
Romans 3:23
Jeremiah 17:9
James 2:10
Romans 3:10

 

Isaiah 64:6

But we are all as an unclean thing, and all our righteousnesses are as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.

Romans 3:23

For all have sinned, and come short of the glory of God;

Jeremiah 17:9

The heart is deceitful above all things, and desperately wicked: who can know it?

James 2:10

For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all.

Romans 3:10

As it is written, There is none righteous, no, not one: