peace be upon you
From the creation of Adam(adam in malay langguage) and Eve(Hawa in Malay langguage), repentance was granted to them to erase their sins as an example to all human beings especially muslims and who would follow them into this World. Being Allah slave as Muslims ( Islam)
No matter how great human sins may become, the door for sincere repentance remains open until the last day of this world. Anas r.a quote ;
Sayings From Prophet Muhammad SAW :
Allah, the Almighty, has said : O son of Adam, as long as you call Me and ask of Me, i will forgive what you have done, and I do not mind. O son of Adam, even if your sins reached the clouds and you asked My forgiveness, I will forgive what you have done, and I do not mind. O son of Adam, if you came to Me with sins nearly as great as the earth and you meT Me without givingMe partners, I will give you a similar amount of forgiveness. "
Collected by at-Tirmizi and authenticated in saheeh(sahih in malay) sunan at- Tarmizi, vol. 3 : 175-6, no. 2805
Quote from : Bilal Philips ( Abuameenah Bilal Philips )