Nooh • BN-TAFSEER-IBN-E-KASEER
﴿ ثُمَّ إِنِّىٓ أَعْلَنتُ لَهُمْ وَأَسْرَرْتُ لَهُمْ إِسْرَارًۭا ﴾
“and, behold I preached to them in public; and I spoke to them secretly, in private;”
Please check ayah 71:20 for complete tafsir.