Thomas Brooks’ book Precious Remedies Against Satan’s Devices talks about various ways the Christian is dissuaded from the life Christ wants him or her to live. One such idea is to present God as made up entirely of mercy, to the exclusion of other things which can be said about him.
One way the Christian can fight the urge of our time to view God this way is to consider that the people of God who have gone before didn’t consider God’s mercy as an excuse to sin. The psalmist wrote,
3 For your steadfast love is before my eyes,
and I walk in your faithfulness.
4 I do not sit with men of falsehood,
nor do I consort with hypocrites.
5 I hate the assembly of evildoers,
and I will not sit with the wicked.
–Psalm 26:3-5, ESV