The apostle Paul reminds us that even one parent or grandparent can have great influence on a family.
Timothy had the benefit of being taught the faith of God by his mother and grandmother. Paul reminded him, “I call to remembrance the genuine faith that is in you, which dwelt first in your grandmother Lois and your mother Eunice, and I am persuaded is in you also” (2 Timothy 1:5 2 Timothy 1:5When I call to remembrance the unfeigned faith that is in you, which dwelled first in your grandmother Lois, and your mother Eunice; and I am persuaded that in you also.
American King James Version×).
Notice that only these two female caregivers are praised and acknowledged for the excellent example they provided at home to young Timothy.
His father was a gentile and not a believer in Jesus Christ (Acts 16:1-3 Acts 16:1-3  Then came he to Derbe and Lystra: and, behold, a certain disciple was there, named Timotheus, the son of a certain woman, which was a Jewess, and believed; but his father was a Greek:
 Which was well reported of by the brothers that were at Lystra and Iconium.
 Him would Paul have to go forth with him; and took and circumcised him because of the Jews which were in those quarters: for they knew all that his father was a Greek.
American King James Version×). Yet, beginning with Timothy’s grandmother Lois, and then on to his mother Eunice, they were able to make a difference in teaching Timothy as a boy, after which he would grow up to be one of the early ministers of the Church and a faithful companion and coworker alongside Paul.
This was achieved in spite of the negative influences of living in a gentile nation and in a home with an unbeliever. The positive choices Lois made certainly benefited her descendants.