It was because they approached God based the merits of what they did for Him by doing good things and not by trusting in what He did for them.
Waxaase hubaal ah oo aan shaki kujirin in afduubkaas la afduubey dad u niyadsan in ay sii wadaan shaqadii wanaagsaneed ee ay ka tagtey marxuumadda, in ajarkooda ay ka heli doonaan xagga Alle, waayo waxay u socdeen oo ay niyeesteen in ay sii wadaan shaqadaas.