Luke 3:12

Then some tax collectors came to him to be immersed and asked him, "Teacher, what must we do [i.e., to demonstrate our repentance]?"

Luke 7:29

And when all the people, together with the tax collectors, heard this they praised God for being so just, and were immersed with the immersion [preached] by John.

Matthew 21:31-32

Which of these two sons did what his father wanted?" They answered, "The first one." Jesus said to them, "Truly I tell you, tax collectors and prostitutes [will] enter the kingdom of God ahead of you.

Luke 15:1-2

Now the tax collectors and worldly people were all gathering around Jesus to listen to Him.

Luke 18:13

But the tax collector stood at a distance [i.e., inconspicuously] and would not even look up to heaven, but struck his chest [i.e., in remorse], saying, 'God, [please] have mercy on a sinner like me.'

Treasury of Scripture Knowledge

Summary

Then came also publicans to be baptized, and said unto him, Master, what shall we do?

Bible References

General references

Luke 7:29
And when all the people, together with the tax collectors, heard this they praised God for being so just, and were immersed with the immersion [preached] by John.
Luke 15:1
Now the tax collectors and worldly people were all gathering around Jesus to listen to Him.
Luke 18:13
But the tax collector stood at a distance [i.e., inconspicuously] and would not even look up to heaven, but struck his chest [i.e., in remorse], saying, 'God, [please] have mercy on a sinner like me.'
Matthew 21:31
Which of these two sons did what his father wanted?" They answered, "The first one." Jesus said to them, "Truly I tell you, tax collectors and prostitutes [will] enter the kingdom of God ahead of you.