We believe there is one God (Mrk 12:29), co-existing and eternally shown as three persons consisting of the Father, Son, and Holy Ghost (Matt 28:19).
His character is loving (1 Jn 4:8), powerful (1 Chr 29:11), righteous (Rev 4:8), faithful (Isaiah 25:1), vengeful (Nah 1:2), relational (Jn 3:16), jealous (Exo 20:5), and desperately beautiful (Psa 27:4). He is a creative God, begging man to return to him for salvation (2 Cor 5:20), while he reluctantly (Eze 33:11, 2 Pet 3:9) yet justly damns the wicked (1 Cor 6:9–10).
To repent is to turn away from, or change your mind. In order to be saved, you must repent of all your sins, having a conscious void of offense and living Holy before God.
God will make you Holy when you put your faith in him, and salvation without Holiness is impossible to attain.